/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alipay.sofa.tracer.examples.springmvc.sampler;

import com.alipay.common.tracer.core.constants.SofaTracerConstant;
import com.alipay.common.tracer.core.samplers.Sampler;
import com.alipay.common.tracer.core.samplers.SamplingStatus;
import com.alipay.common.tracer.core.span.SofaTracerSpan;

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

/**
 *
 * CustomOpenRulesSamplerRuler
 * @author: guolei.sgl
 * @since: v2.3.0
 */
public class CustomOpenRulesSamplerRuler implements Sampler {

    private static final String TYPE = "CustomOpenRulesSamplerRuler";

    @Override
    public SamplingStatus sample(SofaTracerSpan sofaTracerSpan) {
        SamplingStatus samplingStatus = new SamplingStatus();
        Map<String, Object> tags = new HashMap<String, Object>();
        tags.put(SofaTracerConstant.SAMPLER_TYPE_TAG_KEY, TYPE);
        tags = Collections.unmodifiableMap(tags);
        samplingStatus.setTags(tags);

        if (sofaTracerSpan.isServer()) {
            samplingStatus.setSampled(false);
        } else {
            samplingStatus.setSampled(true);
        }
        return samplingStatus;
    }

    @Override
    public String getType() {
        return TYPE;
    }

    @Override
    public void close() {

    }
}
